Fans have pointed out that the most obvious answer to this question is Cersei Lannister, with her famously emerald-colored eyes. The other possibility is that Melisandre was referring to Littlefinger, who in the books has gray-green eyes—although, actor Aiden Gillen has blue eyes.

Oh, hey, looks like Cersei has green eyes…

HBO

Some fans have pointed out that the green eyes couldn’t possibly refer to Cersei because the valonqar prophecy says Cersei will be killed by her little brother. It’s possible, though, that as fans have long theorized, Arya could use the mask of Jaime to kill Cersei (as she learned to do from her time with the Faceless Men), thus fulfilling the prophecy. But, we’ve also learned in this show that prophecies are rarely 100 percent accurate. And, specifically with the Prince/Princess That Was Promised, these prophecies can be incorrectly translated. So, could the valonqar be talking about a younger sibling rather than a younger brother?

If Arya does indeed kill both the Night King and Cersei, it would make for a hell of an ending for her character—and certainly confirm her as the true hero of Game of Thrones.